GB2197159B - Testing transmission links - Google Patents

Testing transmission links

Info

Publication number
GB2197159B
GB2197159B GB8626453A GB8626453A GB2197159B GB 2197159 B GB2197159 B GB 2197159B GB 8626453 A GB8626453 A GB 8626453A GB 8626453 A GB8626453 A GB 8626453A GB 2197159 B GB2197159 B GB 2197159B
Authority
GB
United Kingdom
Prior art keywords
transmission links
testing transmission
testing
links
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB8626453A
Other versions
GB8626453D0 (en
GB2197159A (en
Inventor
Bernard Stuart Earl Mills
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
STC PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STC PLC filed Critical STC PLC
Priority to GB8626453A priority Critical patent/GB2197159B/en
Publication of GB8626453D0 publication Critical patent/GB8626453D0/en
Priority to US07/117,745 priority patent/US4815119A/en
Priority to FR878715305A priority patent/FR2606240B1/en
Publication of GB2197159A publication Critical patent/GB2197159A/en
Application granted granted Critical
Publication of GB2197159B publication Critical patent/GB2197159B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/301—Circuit arrangements at the subscriber's side of the line
GB8626453A 1986-11-05 1986-11-05 Testing transmission links Expired - Fee Related GB2197159B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8626453A GB2197159B (en) 1986-11-05 1986-11-05 Testing transmission links
US07/117,745 US4815119A (en) 1986-11-05 1987-11-04 Testing transmission links
FR878715305A FR2606240B1 (en) 1986-11-05 1987-11-04 TRANSCEIVER FOR CHECKING TRANSMISSION LINKS AND APPARATUS COMPRISING SAME

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8626453A GB2197159B (en) 1986-11-05 1986-11-05 Testing transmission links

Publications (3)

Publication Number Publication Date
GB8626453D0 GB8626453D0 (en) 1986-12-03
GB2197159A GB2197159A (en) 1988-05-11
GB2197159B true GB2197159B (en) 1990-12-12

Family

ID=10606847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8626453A Expired - Fee Related GB2197159B (en) 1986-11-05 1986-11-05 Testing transmission links

Country Status (3)

Country Link
US (1) US4815119A (en)
FR (1) FR2606240B1 (en)
GB (1) GB2197159B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03267775A (en) * 1990-03-19 1991-11-28 Fujitsu Ltd Loop test system in integrated circuit
US5825849A (en) * 1995-08-31 1998-10-20 Lucent Technologies, Inc. Loop-back test system using a suppressed ringing connection
WO1999034583A1 (en) * 1997-12-24 1999-07-08 3M New Zealand Limited Improvements to testing
ATE395781T1 (en) * 1999-11-04 2008-05-15 Spescom Ltd SUBSCRIBER LINE TEST SYSTEM
GB2368487A (en) * 2000-10-25 2002-05-01 Alan Robert Perrett Remote testing system
US7301432B1 (en) 2005-01-11 2007-11-27 Tii Network Technologies, Inc. Fusing terminal device
US7564904B2 (en) * 2005-05-03 2009-07-21 Texas Instruments Incorporated Apparatus for and method of detection of powered devices over a network
US8369484B2 (en) 2007-09-19 2013-02-05 At&T Intellectual Property I, Lp Methods and apparatus to test a subscriber line for a broadband access service

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1212908A (en) * 1967-09-21 1970-11-18 Siemens Ag Improvements in or relating to pulse code modulation transmission systems
GB1409293A (en) * 1972-02-17 1975-10-08 Marconi Co Ltd Signal transmission systems
US3943305A (en) * 1974-11-11 1976-03-09 Magnetic Controls Company Telephone line control system
GB2019167A (en) * 1978-04-11 1979-10-24 Kokusai Denshin Denwa Co Ltd Monitoring system for optical transmission line repeaters
US4258236A (en) * 1979-04-04 1981-03-24 Conklin Instrument Corporation Remote telephone line switching and testing
WO1987002534A1 (en) * 1985-10-18 1987-04-23 Guido Bernardi Process and related device for remote-controlled switching-on of terminal equipments used in data transmission and tele-processing
GB2198018A (en) * 1986-10-28 1988-06-02 Hitachi Ltd Simultaneous data communication

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546585A (en) * 1968-10-21 1970-12-08 Us Navy Short duration signal burst frequency meter
US4449247A (en) * 1980-07-30 1984-05-15 Harris Corporation Local orderwire facility for fiber optic communication system
US4497060A (en) * 1982-12-08 1985-01-29 Lockheed Electronics Co., Inc. Self-clocking binary receiver
GB2149616B (en) * 1983-11-10 1987-10-07 Standard Telephones Cables Ltd Testing telephone lines
US4686696A (en) * 1985-12-02 1987-08-11 Keptel, Inc. Transmission line signal sensing circuit employing means for conserving power, especially for use with a telephone disconnect circuit, and associated method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1212908A (en) * 1967-09-21 1970-11-18 Siemens Ag Improvements in or relating to pulse code modulation transmission systems
GB1409293A (en) * 1972-02-17 1975-10-08 Marconi Co Ltd Signal transmission systems
US3943305A (en) * 1974-11-11 1976-03-09 Magnetic Controls Company Telephone line control system
GB2019167A (en) * 1978-04-11 1979-10-24 Kokusai Denshin Denwa Co Ltd Monitoring system for optical transmission line repeaters
US4258236A (en) * 1979-04-04 1981-03-24 Conklin Instrument Corporation Remote telephone line switching and testing
WO1987002534A1 (en) * 1985-10-18 1987-04-23 Guido Bernardi Process and related device for remote-controlled switching-on of terminal equipments used in data transmission and tele-processing
GB2198018A (en) * 1986-10-28 1988-06-02 Hitachi Ltd Simultaneous data communication

Also Published As

Publication number Publication date
GB8626453D0 (en) 1986-12-03
GB2197159A (en) 1988-05-11
FR2606240B1 (en) 1994-06-24
US4815119A (en) 1989-03-21
FR2606240A1 (en) 1988-05-06

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20051105